MWV message format - WAC155

WAC155 User Guide

Document code
M210822EN
Revision
F
Language
English (United States)
Product
WAC155
Document type
User guide

The NMEA 0183 specification defines wind speed and angle message MWV:

$WIMWV,<a.a>,<R>,<s.s>,<U>,<S>*<CS><cr><lf>
$WIMWV Fixed text at the start of the message
<a.a> Wind angle, 0 … 359 degrees
<R> Reference: R = Relative, T = Theoretical
<s.s> Wind speed
<U> Units: K = km/h, M = m/s, N = knots (only m/s is provided)
<S> Status: A = Valid, V = Invalid
* Asterisk, indicating that the next field is the checksum
<CS> Two-character checksum for the message

The comma (,) is used as a separator between the fields. Here are some examples of MWV messages:

 $WIMWV,39,R,1.3,M,A*06
 $WIMWV,61,R,1.0,M,A*08
 $WIMWV,39,R,0.5,M,A*01
 $WIMWV,59,R,1.2,M,A*01
To enable the automatic MWV message output, use the SETMES command. By default, no automatic messages are enabled.